Voluntary contribution exemption: electoral trusts exempted from income inclusion where distribution to political parties and compliance with central rules. Voluntary contributions to an electoral trust are not included in the trust's total income if the trust distributes the vast majority of aggregate donations received in the previous year together with any earlier surplus to qualifying political parties and functions in accordance with rules made by the Central Government; the amendment takes effect from the first day of April, 2010 and applies to the relevant assessment year and subsequent years.